The reaction of halo-boron compounds with silanes provides boranes and halosilanes. Data from a transient region of a signal is used with suitable models and curve-fitting methods to predict the signal that would be measured for the system at the completion of the reaction. The force profile may provide for a constant input force to accomplish the full travel of the cam. The present invention can be applied to signals processing devices for processing image signals. The insulating layer is formed to cover a relatively thin portion of the solid electrolyte layer.